Broner/Maidana Fight

Formal Investigation Into Cheating Allegations

12/17/2013 12:40 PM PST BY TMZ STAFF

Exclusive Details

Trash talking boxer Adrien Broner got his ass beat and his welterweight title stripped in a stunning loss to Marcos Maidana this Saturday ... but TMZ Sports has learned, there's now a full-blown investigation into allegations of cheating.

Sources close to "the Problem" tell us ... the Texas Boxing Commission is now analyzing video of the fight which some say shows Maidana taking what looks like a pill during the WBA welterweight championship fight last Saturday.

The rules are so strict ... even water needs to be tested prior to a fight before the boxer can consume it. Pills and any other substance for that matter are off limits.

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